Sodium Dodecyl Sulfate-assisted Synthesis of 1-(Benzothiazolylamino)methyl-2-naphthols in Water

2010 ◽  
Vol 63 (11) ◽  
pp. 1538 ◽  
Author(s):  
Anil Kumar ◽  
M. Sudershan Rao ◽  
V. Kameswara Rao
Keyword(s):  
Reaction Time ◽  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Efficient Synthesis ◽  
One Pot ◽  
Short Reaction Time ◽  
One Pot Condensation ◽  
Dodecyl Sulfate

An efficient synthesis of 1‐(benzothiazolylamino)methyl‐2‐naphthols has been developed in water by one‐pot condensation of 2‐naphthol, aldehydes and 2‐aminobenzothiazole catalyzed by sodium dodecyl sulfate. Advantages of the methodology include a very short reaction time, excellent yields and catalytic use of the sodium dodecyl sulfate.

Synthesis of a series of novel 2,3-dihydrofuranonaphthoquinone derivatives

2017 ◽  
Vol 41 (8) ◽  
pp. 448-451 ◽  
Author(s):  
Maryam Salari ◽  
Mohammad H. Mosslemin ◽  
Alireza Hassanabadi
Keyword(s):  
Reaction Time ◽  
Green Chemistry ◽  
Organic Solvent ◽  
Aromatic Aldehyde ◽  
Efficient Synthesis ◽  
One Pot ◽  
Short Reaction Time ◽  
Highly Efficient ◽  
One Pot Condensation ◽  
High Yields

A green and highly efficient synthesis of 12 novel trans-2-(4-chlorobenzoyl)-3-aryl-2,3-dihydronaphtho[2,3- b]furan-4,9-diones has been achieved via a three-component, one-pot condensation of 2-[2-(4-chlorophenyl)-2-oxoethyl)]isoquinolinium bromide with 2-hydroxy-1,4-naphthoquinone and an aromatic aldehyde in the presence of catalytic amounts of choline hydroxide in water under reflux conditions. The advantages of this method are a short reaction time, high yields and the avoidance of any hazardous organic solvent. Therefore, this procedure can be classified as green chemistry.

scholarly journals Green synthesis of trans-2-(4-chlorobenzoyl)-5-hydroxy-3-(aryl)-2,3-dihydrobenzofuran-4,7-diones

2017 ◽  
Vol 41 (5) ◽  
pp. 271-274 ◽  
Author(s):  
Maryam Salari ◽  
Alireza Hassanabadi ◽  
Mohammad H. Mosslemin
Keyword(s):  
Reaction Time ◽  
Organic Solvent ◽  
Green Synthesis ◽  
Aromatic Aldehydes ◽  
Efficient Synthesis ◽  
One Pot ◽  
Short Reaction Time ◽  
Excellent Yield ◽  
One Pot Condensation ◽  
High Yields

A green and efficient synthesis of trans-2-(4-chlorobenzoyl)-5-hydroxy-3-(aryl)-2,3-dihydrobenzofuran-4,7-diones has been achieved in excellent yield via a three-component one-pot condensation of 2-[2-(4-chlorophenyl)-2-oxoethyl)]isoquinolinium bromide with 2,5-dihydroxy-1,4-benzoquinone and aromatic aldehydes in the presence of catalytic amounts of choline hydroxide in water under reflux conditions. The salient features of this protocol are the short reaction time, the high yields and it does not involve any hazardous organic solvent.

scholarly journals One-pot, three-component, selective synthesis of the polyfunctionalized 4H-pyran and 4H-benzo[b]pyran derivatives in the presence of a highly efficient molecular sieve-supported zinc catalyst

2018 ◽  
Vol 7 (4) ◽  
pp. 316-322 ◽  
Author(s):  
Ágnes Magyar ◽  
Zoltán Hell
Keyword(s):  
Reaction Time ◽  
Ethyl Acetoacetate ◽  
Molecular Sieve ◽  
Aromatic Aldehydes ◽  
Selective Synthesis ◽  
Reaction Conditions ◽  
One Pot ◽  
Dicarbonyl Compound ◽  
Short Reaction Time ◽  
One Pot Condensation

Abstract A series of pentasubstituted 4H-pyrans and tetrahydrobenzo[b]pyrans are synthesized with excellent yields via a one-pot condensation of aromatic aldehydes, malononitrile, and a dicarbonyl compound, ethyl acetoacetate, acetyl-acetone or dimedone, in the presence of 4 Å molecular sieve modified with zinc(II) as heterogeneous catalyst, in ethanol. The process offers numerous advantages, such as better yield, short reaction time, and mild reaction conditions. The catalyst’s preparation is simple and it could be reused while still maintaining its activity.

scholarly journals One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones Catalyzed by Chlorosulfonic Acid

2005 ◽  
Vol 2 (4) ◽  
pp. 228-230 ◽  
Author(s):  
Jin Tong-Shou ◽  
Zhao Ying ◽  
Liu Li-Bin ◽  
Li Tong-Shuang
Keyword(s):  
Reaction Time ◽  
Biginelli Reaction ◽  
Chlorosulfonic Acid ◽  
Efficient Synthesis ◽  
Reaction Conditions ◽  
One Pot ◽  
Short Reaction Time ◽  
One Pot Synthesis

An efficient synthesis of 3,4-dihydropyrimidin-2-ones (DHPMs) from the aldehydes, β-ketoesters and urea in ethanol using chlorosulfonic acid as the catalyst is described. Compared with the classical Biginelli reaction conditions, this method has the advantage of excellent yields and short reaction time.

scholarly journals ZnO Catalyzed Efficient Synthesis of Some New 2-Substituted-4,6-diarylpyrimidines

2012 ◽  
Vol 2012 ◽  
pp. 1-6
Author(s):  
K. L. Ameta ◽  
Biresh Kumar ◽  
Nitu S. Rathore
Keyword(s):  
Reaction Time ◽  
Heterogeneous Catalyst ◽  
Simple Procedure ◽  
Secondary Amines ◽  
Efficient Synthesis ◽  
One Pot ◽  
Short Reaction Time ◽  
Three Component Reaction

A simple and efficient protocol is developed for the synthesis of 2-substituted-4,6-diarylpyrimidines from one-pot three-component reaction of 4′-hydroxy-3′,5′-dinitro substituted chalcones, S-benzylthiouronium chloride (SBT), and heterocyclic secondary amines (morpholine/pyrrolidine/piperidine) in the presence of 15 mol% of ZnO as a heterogeneous catalyst. The present methodology offers several advantages such as being a simple procedure as well as providing excellent yields, and short reaction time. The catalyst is inexpensive, stable, and can be easily recycled and reused for several cycles with consistent activity.

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